#1D366D#1D366D

#1D366D is a dark, moderate blue. Relative luminance 0.040; OKLCH L 34.6% C 0.101 H 263.6°. Best body text is #FFFFFF at 11.66:1 contrast (WCAG AA passes).

Color values

HEX	#1D366D
RGB	rgb(29, 54, 109)
HSL	hsl(221, 58%, 27%)
HSV	hsv(221, 73%, 43%)
CMYK	cmyk(73.4%, 50.5%, 0%, 57.3%)
CIE-LAB	lab(23.68, 10.97, -34.87)
CIE-LCH	lch(23.68, 36.55, 287.47°)
OKLab	oklab(34.58% -0.0112 -0.1)
OKLCH	oklch(34.58% 0.101 263.6)
XYZ	xyz(4.5852, 4.0032, 14.9961)
Luminance	0.0400 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D366D #6D541D

analogous

#1D5E6D #1D366D #2C1D6D

triadic

#1D366D #6D1D36 #366D1D

tetradic

#1D366D #6D1D5E #6D541D #1D6D2C

square

#1D366D #6D1D5E #6D541D #1D6D2C

split-complementary

#1D366D #6D2C1D #5E6D1D

monochromatic

#060C18 #101E3D #1D366D #2A4E9D #3A67CB

Accessibility & contrast

On white

11.66

#1D366D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.80

#1D366D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D366D

11.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D366D	#FFFFFF	#000000	##FFFFFF
##1D366D	1.00	11.66	1.80	11.66
#FFFFFF	11.66	1.00	21.00	1.00
#000000	1.80	21.00	1.00	21.00
##FFFFFF	11.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#183C6F

Deuteranopia (green-blind)

#05356C

Tritanopia (blue-blind)

#00434C

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #1d366d;
/* rgb */ color: rgb(29, 54, 109);
/* oklch */ color: oklch(34.6% 0.101 263.6);

Tailwind

colors: {
  custom: {
    50: '#646c97',
    500: '#1d366d',
    950: '#000000',
  },
}

SCSS

$custom: #1d366d;
$custom-light: #646c97;
$custom-dark: #000000;

JSON

{
  "hex": "#1d366d",
  "rgb": {
    "r": 29,
    "g": 54,
    "b": 109
  },
  "hsl": {
    "h": 221.25,
    "s": 57.971,
    "l": 27.059
  },
  "oklch": {
    "l": 0.34584,
    "c": 0.10059,
    "h": 263.6
  },
  "luminance": 0.04004
}

Semantic roles & 50–950 ramp

primary

#1D366D

secondary

#A28444

accent

#B147E1

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06060D

muted

#7A7A7E

Preview Lab

Preview with #1D366D

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →